RT info:eu-repo/semantics/article
T1 Trispyrazolylborate Ligands Supported on Vinyl Addition Polynorbornenes and Their Copper Derivatives as Recyclable Catalysts
A1 Molina de la Torre, Jesús Ángel
A1 Pérez Ortega, Ignacio
A1 Beltrán de Heredia Rentería, Juan
A1 Rodríguez, Manuel R.
A1 Díaz Requejo, María del Mar
A1 Pérez, Pedro J.
A1 Albéniz Jiménez, Ana Carmen
K1 Química
K1 2303 Química Inorgánica
K1 2304 Química Macromolecular
K1 2306 Química Orgánica
AB Polynorbornenes prepared by vinyl addition poly- merization and bearing pendant alkenyl groups serve as skeletons to support trispyrazolylborate ligands (Tpx) built at those alkenyl sites. Reaction with CuI in acetonitrile led to VA-PNB–TpxCu(NCMe) (VA-PBN = vinyl addition polynorbor- nene) with a 0.8–1.4 mmol incorporation of Cu per gram of polymer. The presence of tetracoordinated copper(I) ions was been assessed by FTIR studies on the corresponding VA-PNB-TpxCu(CO) adducts, in agreement with those on discrete TpxCu(CO). The new materials were employed as heteroge- neous catalysts in several carbene- and nitrene-transfer reac- tions, showing a behavior similar to that of the homogene- ous counterparts but also being recycled several times main- taining a high degree of activity and selectivity. This is the first example of supported Tpx ligands onto polymeric sup- ports with catalytic applications.
SN 0947-6539
YR 2019
FD 2019
LK http://uvadoc.uva.es/handle/10324/37807
UL http://uvadoc.uva.es/handle/10324/37807
LA eng
NO Chem. Eur. J. 2019, 25, 556-563
DS UVaDOC
RD 27-dic-2024